list_add double add: new=ffff888024c04420, prev=ffff888024c04420, next=ffff88800f1a5f00.
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:29!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 8440 Comm: kworker/u5:1 Not tainted 5.12.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: hci0 hci_rx_work
RIP: 0010:__list_add_valid.cold+0x26/0x3c lib/list_debug.c:29
Code: 16 3f 5b fb 4c 89 e1 48 c7 c7 40 2b fc 88 e8 ea 38 f0 ff 0f 0b 48 89 f2 4c 89 e1 48 89 ee 48 c7 c7 80 2c fc 88 e8 d3 38 f0 ff <0f> 0b 48 89 f1 48 c7 c7 00 2c fc 88 4c 89 e6 e8 bf 38 f0 ff 0f 0b
RSP: 0018:ffffc9000168f800 EFLAGS: 00010286
RAX: 0000000000000058 RBX: ffff8880246fd298 RCX: 0000000000000000
RDX: 0000000000000002 RSI: ffffffff88fc2a40 RDI: fffff520002d1ef3
RBP: ffff888024c04420 R08: 0000000000000058 R09: ffff8880ba1301a7
R10: ffffed1017426034 R11: 0000000000000001 R12: ffff88800f1a5f00
R13: ffff88800f1a5f00 R14: ffff888024c04420 R15: ffff888024c04418
FS:  0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000055c009 CR3: 000000000a68e000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __list_add include/linux/list.h:67 [inline]
 list_add_tail include/linux/list.h:100 [inline]
 kobj_kset_join lib/kobject.c:196 [inline]
 kobject_add_internal+0x15f/0x930 lib/kobject.c:246
 kobject_add_varg lib/kobject.c:390 [inline]
 kobject_add+0x120/0x190 lib/kobject.c:442
 device_add+0x2d8/0x1ad0 drivers/base/core.c:3175
 hci_conn_add_sysfs+0x88/0x150 net/bluetooth/hci_sysfs.c:53
 hci_sync_conn_complete_evt.isra.0+0x4a2/0x730 net/bluetooth/hci_event.c:4356
 hci_event_packet+0xcda/0x71b0 net/bluetooth/hci_event.c:6243
 hci_rx_work+0x3db/0xba0 net/bluetooth/hci_core.c:5088
 process_one_work+0x84c/0x13d0 kernel/workqueue.c:2275
 worker_thread+0x598/0xf80 kernel/workqueue.c:2421
 kthread+0x36f/0x450 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Modules linked in:
---[ end trace b3357da02d0cbbf9 ]---
RIP: 0010:__list_add_valid.cold+0x26/0x3c lib/list_debug.c:29
Code: 16 3f 5b fb 4c 89 e1 48 c7 c7 40 2b fc 88 e8 ea 38 f0 ff 0f 0b 48 89 f2 4c 89 e1 48 89 ee 48 c7 c7 80 2c fc 88 e8 d3 38 f0 ff <0f> 0b 48 89 f1 48 c7 c7 00 2c fc 88 4c 89 e6 e8 bf 38 f0 ff 0f 0b
RSP: 0018:ffffc9000168f800 EFLAGS: 00010286
RAX: 0000000000000058 RBX: ffff8880246fd298 RCX: 0000000000000000
RDX: 0000000000000002 RSI: ffffffff88fc2a40 RDI: fffff520002d1ef3
RBP: ffff888024c04420 R08: 0000000000000058 R09: ffff8880ba1301a7
R10: ffffed1017426034 R11: 0000000000000001 R12: ffff88800f1a5f00
R13: ffff88800f1a5f00 R14: ffff888024c04420 R15: ffff888024c04418
FS:  0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000055c009 CR3: 000000000a68e000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400